Acetylene



no. 9 olo 9 inw u A d e t n e t a P VI D N U B L F. ...1| 5, no 6 0. N

ACETYLENE GAS GENERATOR..

(Application led Apr. 5, 1597.)

(No Model.)

INVENTOR Swag BY l ATTORNEY VWITNESSES:

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PATENT tries.

FRANK E. BNDYfOFFLMIRA, NEV YORK.

AC ETY'LEN E-GAS G EN ERATOR.

SPECIFICATION forming part of Letters Patent No. 608,571, dated August 9, 1898.

Application4 iiieq April 5, '1897'.

To a/ZZ whom t may concernknl'f' Be it known that I, FRANK EQBUNDY, a citi-y zen of the United States, residing at Elmira, in the county of Chemungand- Statekolh'New York, have invented certain newland uscful Improvements in Gas-Generators, of which; the followlng is a specification.y I My invention relates to .improvements-` in.

' gas-generators in whicha gas is'produced by the decomposition of a solid by ali'qiiid 5" and 'it appertains more particularly togenerators of acetylene gas wherein the gas is to ,be produced at a low pressure and in no largerTquantity than is needed for immediateponsu'mption; and the objects of myl iinproven'i'ents are, lirst, to provide a simple and compact ar? rangement for the water and carbid recepta-. cles within a singleinclosing casewhich may; be made small enough to adapt thegeneratorl; for use in connection with various kinds of lamps, lanterns, headlights, dac.; as well as of larger size for supplying a number of burners; second, to provide means for properly regulating the feed of the water to the carbid, so that the gas shall be produced at a rate and pressure sufficient to supply a given burner, and, third, to provide a secondary gas-chamber which receives gas from the generatingchamber through a small y reducing-passage and delivers it to the burner or burners dry and at a pressure which shall be steady and free of the il uctuations that must obtain Where the gas is taken directly from tlie generating-I chamber. I attain these objects by the apparatus illustrated in the accompanying draw, ings, in which- Figure l represents a vertical section of such a generator/adapted for use in connection with lamps, &c. and Fig. 2, a cross-section of the saine on the line in Fig. l.

Similar letters refer to similar parts throughout both views. .H

The containing or inclosing case is cylindrical in form and consists of the base and top sections A yand B, coupled together by a screw-coupling a b. In the base-section is a pan or cupQC, which forms the carbid-receptacle. This is provided with a cover D, which has a hole d at the center. At the center of the cupQ is; an upright perforated tube E, having an enlarged-ftop'portion e, which eX- tends upth'roughthe hole in the cover. The

lsam-i1 No. 630,842. (No man.)

,tube ias't'astenhe'd in position by the screw F,

whichfextends up through the bottom'of the base-section and makes a gas-tight joint when the two parts are screwed tightly together. This'arrangement admits of the tube being -readily removed when necessary to clean it The holed is large enough to leave a smallannular opening around the top of the iiil'lbQE.

QThe'to'p 4sect-ion has a diaphragm G, located .s o as to cornea short distance above the caryloid-rcce'ptacle.v From the center of this diahrz'tjgm,risesv a small cylindrical chamber I-I othge top of the'section. A very small hole h forms adcom'municating passage from below the diaphragm into this chamber. The top Avfof "the chamberiis closed by a screw-cap I, ,thro'ughfwhich passes' tube J to the burner. :'Above thevdiaphragm G and encircling the chamber I-I is`a 'second diaphragm L, whichv forms the bottom of the water-tank. This tank is located at a distance above the carbid-receptacle sufficient to give the head of flow necessary to produce the gas at the desired pressure. A iiller-plug M is provided iin the top of the tank, which is also the top of the section B, and this plug is provided witli'a small vent-hole m through its side, so that when'it is screwed up a triiie it will admit atmospheric pressure above the water in the tank. Below the water-tank is a valvecase N, provided with a central bore threaded at its outer end to receive the screw-plug 0. Through this plug is screwed the valvestem' P, having a conical valve at its end which seats in a corresponding valve-seat at the end of the bore in N. A nipple n leads from the tank to the bore of the valve-case, the lower end of the nipple being cut to form a seat for the small conical check-valve Q, which closes upwardly and is held in place by a small guide-stein and the valve-stem P, upon which it rests when open. A tube 'n' leads from the valve-case down through the diaphragm G to deliver the water linto the top of the tube E. A set-nut p and jam-nut p are screwed on the valve-stem P inside the plug O, and by alittle experiment these nuts can be so set that when theydvalve-stem is turned out until they strike the plug the valve-opening will be just sufficient to supply water to the carbid at the rate necessary to produce the gas in quantity corresponding to the consumption. Legs It raise the generator a sufficient distance to accommodate the thumb-scrcwh when the generator forms the base of a lamp. The lamp or lantern chimney or combustion-chamber will be attached to the cap I in any approved manner.

To operate the lamp, the sections A and ,l are separated andthe cup C charged with carbid, the cover D being removed for this purpose. The parts are then replaced, as shown in the drawings, and the water-tank is filled. lVhen it is desired to produce a light, the filler-plug is turned up to open the vent and the valve-stem I is turned out as far as it will go. In a short time gas will issue at the burner and can be touched ofl with a match, after which it will burn with a steady and brilliant flame, according to the size of tip used. The water flows from the tank through tube 71', whence it drops into tube l, attacking the carbid first through the lower perforations and afterward through the higher ones, as the bottom ot the cup t) fills with lime deposit. lhe gas rises through the small annular opening (I, the greater part of the moisture held in suspension being condensed on the cover l) and falling back to attack. fresh carbid. lhegas accumulatesaround and on top of cup C, where it is further dried by condensation from contact with diaphragm G and the sides of; the outer casing. lassing slowly through the restricted orifice 71 into chamber II it accumulates therein in a thoroughly dry condition and is cooled by reason of the water-,jacket formed by the supply-tank. From the chamber II it is taken oft at the burner and at a steady pressure,

.since this chamber acts as a pressure-regulator, inasmuch as only a very small stream of gas can issue through orifice 71, and any sudden rise of pressure in the generatingehamber formed below diaphragm G, caused by a flashing of the gas when water is admitted too freely, as when the lamp is given a heavy jar, will not be felt in said chamber. The rise of pressure in the generating-ehamber stops the flow of water, but the gas cannot escape out through the water-tank, since the check-valve Q will be closed the instant a backflow is set up through tube n'.

\Vhile I have described my invention as applied to lamps, it may also be applied to larger apparatus, and I do not therefore confine myself to the precise arrangement and construction of parts as above described.

I am aware that various ways have been heretofore devised for feeding a liquid to a solid in gas-generators by gravity and for regulating and properly proportioning such feed; and I do not claim this broadly.

Ihat I do claim as my invention, and desire to secure by Letters Patent, is-

l. The combination, within an inclosing case, of a generating-chamber in the lower part of the ease, a diaphragm in the upper part of the case, a secondary gas-chamber above the diaphragm and in direct communication with the generati11g-chamber through a restricted orifice in the diaphragm, a gasoutlet from the secondary chamber, a liquidreceptaele in the upper part of the case su rrounding the secondary gas-chamber, a perforate stand-pipe in the generatiiig-chamber, a passage leading from the liquid-receptacle to said stand-pipe, and a hand-operated valve in said passage whereby the liquid-delivery is positively adjusted or shut of'f substantially as described.

2. In a gas -generator, the combination, within a generating-chamber, of a solid-receptacle smaller than said chamber, a covel for the s lidreceptacle provided with a restricted orifice through which the generated gas rises into the chamber above the receptacle, a gas-outlet leading from the generating-chamber outside of' the covered receptacle, and means for feeding li |uid tothe solid in the receptacle, substantially as described.

i). In a gas-generator, the combination, within an inelosng case, of a generatingchamber in the lower part of the case, a solidrecepfacle within the generating-chamber, a cover for said receptacle provided with a restricted orifice through which the genera-ted gas rises into said chamber above the receptacle, a secondary gas-chamber in the upper part of the inelosing case into which the gas passes through a second restricted orifice, a liquid-receptacle also in the upper part of the case, a valve-controlled passage leading` from the liquid-receptacle to the solid in the solidreceptacle, and a gas-outlet from the secondary gas-chamber, substantially as described.

if. In a gas-generator, the combination of a generating chamber, a solid receptacle within the gencrating-chamber, a perforated stand-pipe in said receptacle, a cover for the receptacle provided with an opening which forms a restricted orifice around the top of the stand-pipe through which orifice the generated gas rises into the generati11g-chamber above the receptacle, a gas-outlet from said chamber, a source of liquid-supply, and a valvecontrolled passage leading from the source of supply to the top of the stand-pipe, substantially as described.

5. In a gas-generator, the combination with a solid-receptacle and a liquid-receptacle of a valve in the line of communication between the two, said valve comprising a valve-chamber having communication with the two receptacles, a screw-plug at one end ot the valve-chamber, a val ve-stem screwed through the plug, and a set-nut on the stem inside the plug, substantially as described.

In testimony whereof I have affixed my signature in presence of two witnesses.

F ANK l'l. IEUNDV. vWitnesses:

J. J, Gomis, (l. 'lnacnv S'ranc.

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